CN105448382A - Rare-earth doped efficient crystalline silicon solar cell aluminum paste - Google Patents
Rare-earth doped efficient crystalline silicon solar cell aluminum paste Download PDFInfo
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- CN105448382A CN105448382A CN201410463110.1A CN201410463110A CN105448382A CN 105448382 A CN105448382 A CN 105448382A CN 201410463110 A CN201410463110 A CN 201410463110A CN 105448382 A CN105448382 A CN 105448382A
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Abstract
The invention relates to a rare-earth doped efficient crystalline silicon solar cell aluminum paste and a preparation method thereof. The rare-earth doped efficient crystalline silicon solar cell aluminum paste consists of the following components in percentage by mass: 60%-80% of aluminum powder, 15%-30% of organic carrier, 0.5%-4% of inorganic binder and 0.0001%-0.5% of rare earth dopant, wherein the rare earth dopant is selected from one or more of lanthanum, yttrium, europium, holmium, thulium and cerium oxides and the like or other compounds; and the average particle diameter of the aluminum powder ranges from 1 to 8 microns. To solve the technological problem, the aluminum paste capable of increasing conversion efficiency of a crystalline silicon solar cell and the preparation method of the aluminum paste are provided by the invention, and the appearance of a solar cell prepared by adopting the aluminum paste meets the requirement of solar cells.
Description
Technical field
The present invention relates to environment-friendly type new material technology field, specifically a kind of environmental friendly lead-free aluminum slurry and preparation method thereof.
Background technology
The energy plays a part very important to global economic development and social progress, but traditional fuel energy reduces day by day, it also becomes increasingly conspicuous to the harm that environment causes, how the appearance of haze weather just the traditional fuel energy excessively use the climatic phenomenon caused.These all force people to find renewable and clean energy resource, and solar energy becomes the focus of people's concern again with its exclusive advantage.Aluminium paste is the critical material preparing aluminium back surface field or aluminum back electrode, and its composition all has a significant impact the electrical property of solar cell and the degree of crook of silicon chip.
Summary of the invention
A kind of rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells, is characterized in that: each constituent mass percentage is: aluminium powder 60% ~ 80%, organic carrier 15% ~ 30%, inorganic binder 0.5% ~ 4%, rare-earth dopant 0.0001% ~ 0.5%.
Described aluminium powder average grain diameter is 1 ~ 8 μm.
The each constituent mass percentage of described organic carrier is: oleyl alcohol 20% ~ 50%, alcohol ester ten two 20% ~ 50%, butyl carbitol acetate 10% ~ 30%, diffusion pump oil 0% ~ 5%, ethyl cellulose 1% ~ 5%, sorbester p37 1% ~ 5%.
Described inorganic bond is prepared from by glass dust A and B component.Wherein the ratio of glass dust A and B is that 5:3 mixes.
The each constituent mass percentage of described glass dust A is: silica 1 0% ~ 40%, zinc oxide 10% ~ 40%, barium monoxide 5% ~ 25%, antimonous oxide 5% ~ 25%, alundum (Al2O3) 1% ~ 10%, vanadic oxide 1% ~ 5%, calcium oxide 1% ~ 5%.
The each constituent mass percentage of described glass dust B is: boron oxide 20% ~ 60%, zinc oxide 10% ~ 40%, antimonous oxide 10% ~ 30%, silica 5% ~ 25%, barium monoxide 1% ~ 10%, gallic oxide 1% ~ 5%, aluminium oxide 1% ~ 10%.
Described rare-earth dopant is one or more compositions in the oxides such as lanthanum, yttrium, europium, holmium, thulium, cerium or other compounds, and the ratio of content is 0 ~ 0.5 part of aluminium paste total amount.
Preparation process is:
(1) preparation of organic bond: take organic bond raw material by formula rate in 1 aluminium paste, mix, at the temperature of 80 DEG C, adopt the dissolution mechanism heated while stirring, the time is about 2 ~ 4 hours, and organic cellulose dissolves obtain transparent organic bond completely;
(2) preparation of inorganic bond: take the raw material of glass dust A and B respectively by formula rate in 1 aluminium paste, pulverized mixing, then at 1200 ~ 1400 DEG C, melting is evenly clarified to glass metal for 40 ~ 200 minutes, then quenches with deionized water and washes, at 30 ~ 50 DEG C of very fast dry 2h;
(3) a kind of preparation of rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells: by formula, inorganic bond 0.5 ~ 4 part, inorganic additive 1 ~ 10 part, rare earth addition 0 ~ 0.5 part prepared by the organic bond 15 ~ 30 parts aluminium powder, step (1) prepared, step (2), mix after slurry 4 ~ 7 times is rolled in rear grinding and obtain rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells.
Technical problem solved by the invention provides a kind of aluminium paste and the preparation method that can improve crystal silicon solar cell sheet conversion efficiency, and exterior appearance also meets solar cell requirement.
After sintering, the coefficient of expansion is little, and cell piece flexibility is little; Electric current and filling promote greatly.
embodiment:
This patent product is applicable to the back surface field making crystal silicon solar energy battery, is suitable for the silk screen printing of mono-crystalline silicon solar and polysilicon solar cell cell piece, can be widely used in photovoltaic industry and thick-film electronic components and parts industry.
Embodiment 1
(1) use average grain diameter is the aluminium powder of 5 μm;
(2) preparation of organic bond:
Take terpinol 40 parts, alcohol ester 12 parts, butyl carbitol acetate 20 parts, diffusion pump oil 2 parts, ethyl cellulose 5 parts, sapn 853 parts, each thing mixes above, at the temperature of 80 DEG C, the dissolution mechanism heated while stirring is adopted at water bath with thermostatic control reactor, time is about 4 hours, organic cellulose dissolves obtain transparent organic bond completely, temperature of charge, mixing time, stir speed (S.S.) is strictly controlled in process, material is fully mixed, the proportioning of each composition in the strict hierarchy of control, packing after reaching setting-up time, seal for subsequent use.
(3) preparation of inorganic bond:
Be prepared from by glass dust A and B component.Wherein the ratio of glass dust A and B is that 5:3 mixes; Glass dust A is made up of following parts by weight: silicon dioxide 37 parts, 23 parts, zinc oxide, 20 parts, barium monoxide, antimonous oxide 8 parts, alundum (Al2O3) 5 parts, vanadic oxide 3 parts, 4 parts, calcium oxide; Glass dust B is made up of following parts by weight: boron oxide 35 parts, 16 parts, zinc oxide, antimonous oxide 15 parts, silica 20 parts, 4 parts, barium monoxide, gallic oxide 2 parts, 8 parts, aluminium oxide;
(4) weigh glass dust A and B respectively by above-mentioned formula rate, pulverized mixing, then at 1200 ~ 1400 DEG C, melting is evenly clarified to glass metal for 40 ~ 200 minutes, then quenches with deionized water and washes, at 30 ~ 50 DEG C of very fast dry 2h;
(5) preparation of Al-back-surface-field (BSF) paste:
The aluminium powder of 67% by mass percentage, the modification organic bond of 28%, the inorganic bond metal glass powder of 5%, mixes after rear three-roll grinder rolls slurry 3 times, obtains fineness≤12 μm, the Al-back-surface-field (BSF) paste of viscosity 28kcps.
Claims (8)
1. a rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells, is characterized in that: each constituent mass percentage is: aluminium powder 60% ~ 80%, organic carrier 15% ~ 30%, inorganic binder 0.5% ~ 4%, rare-earth dopant 0.0001% ~ 0.5%.
2. the rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells of one according to claim 1, is characterized in that, described aluminium powder average grain diameter is 1 ~ 8 μm.
3. rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells according to claim 1, it is characterized in that, each constituent mass percentage of described organic carrier is: oleyl alcohol 20% ~ 50%, alcohol ester ten two 20% ~ 50%, butyl carbitol acetate 10% ~ 30%, diffusion pump oil 0% ~ 5%, ethyl cellulose 1% ~ 5%, sorbester p37 1% ~ 5%.
4. rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells according to claim 1, it is characterized in that, described inorganic bond is prepared from by glass dust A and B component, and the ratio of glass dust A and B is that 5:3 mixes.
5. rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells according to claim 4, it is characterized in that, each constituent mass percentage of described glass dust A is: silica 1 0% ~ 40%, zinc oxide 10% ~ 40%, barium monoxide 5% ~ 25%, antimonous oxide 5% ~ 25%, alundum (Al2O3) 1% ~ 10%, vanadic oxide 1% ~ 5%, calcium oxide 1% ~ 5%.
6. rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells according to claim 4, it is characterized in that, each constituent mass percentage of described glass dust B is: boron oxide 20% ~ 60%, zinc oxide 10% ~ 40%, antimonous oxide 10% ~ 30%, silica 5% ~ 25%, barium monoxide 1% ~ 10%, gallic oxide 1% ~ 5%, aluminium oxide 1% ~ 10%.
7. rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells according to claim 1, it is characterized in that, described rare-earth dopant is one or more compositions in the oxides such as lanthanum, yttrium, europium, holmium, thulium, cerium or other compounds, and the ratio of content is 0 ~ 0.5 part of aluminium paste total amount.
8. rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells according to claim 1, it is characterized in that, preparation process is:
(1) preparation of organic bond: take organic bond raw material by formula rate in 1 aluminium paste, mix, at the temperature of 80 DEG C, adopt the dissolution mechanism heated while stirring, the time is about 2 ~ 4 hours, and organic cellulose dissolves obtain transparent organic bond completely;
(2) preparation of inorganic bond: take the raw material of glass dust A and B respectively by formula rate in 1 aluminium paste, pulverized mixing, then at 1200 ~ 1400 DEG C, melting is evenly clarified to glass metal for 40 ~ 200 minutes, then quenches with deionized water and washes, at 30 ~ 50 DEG C of very fast dry 2h;
(3) a kind of preparation of rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells: by formula, inorganic bond 0.5 ~ 4 part, inorganic additive 1 ~ 10 part, rare earth addition 0 ~ 0.5 part prepared by the organic bond 15 ~ 30 parts aluminium powder, step (1) prepared, step (2), mix after slurry 4 ~ 7 times is rolled in rear grinding and obtain rear-earth-doped high efficiency crystalline aluminum paste of silicon solar cells.
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| CN201410463110.1A CN105448382A (en) | 2014-09-12 | 2014-09-12 | Rare-earth doped efficient crystalline silicon solar cell aluminum paste |
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| CN201410463110.1A CN105448382A (en) | 2014-09-12 | 2014-09-12 | Rare-earth doped efficient crystalline silicon solar cell aluminum paste |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040569A1 (en) * | 2016-08-30 | 2018-03-08 | 南通天盛新能源股份有限公司 | Aluminum paste with high filling rate for local contact back surface field of perc cell and preparation method and use thereof |
| CN108447623A (en) * | 2018-03-23 | 2018-08-24 | 江苏国瓷泓源光电科技有限公司 | Modified boron nitride replaces simple substance boron doping solar battery aluminum slurry and preparation method thereof |
| WO2022116646A1 (en) * | 2020-12-01 | 2022-06-09 | 广州市儒兴科技开发有限公司 | Electrode slurry that makes contact with p+ emitter of n-type solar cell |
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| CN102254587A (en) * | 2011-05-17 | 2011-11-23 | 陈晓东 | Sizing agent for Al-BSF (Al-back surface field) of silicon solar cell and preparation method thereof |
| CN102314958A (en) * | 2011-08-31 | 2012-01-11 | 乐凯胶片股份有限公司 | Conductive aluminum paste used for crystalline-silicon solar-battery back electrode and preparation method thereof |
| CN102360585A (en) * | 2011-06-28 | 2012-02-22 | 陕西天盛新材料科技有限公司 | Aluminum paste for improving conversion efficiency of solar cells and preparation method for aluminum paste |
| CN103474127A (en) * | 2013-08-23 | 2013-12-25 | 湖南红太阳光电科技有限公司 | Crystalline silicon battery back aluminum paste with upconversion characteristic |
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2014
- 2014-09-12 CN CN201410463110.1A patent/CN105448382A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254587A (en) * | 2011-05-17 | 2011-11-23 | 陈晓东 | Sizing agent for Al-BSF (Al-back surface field) of silicon solar cell and preparation method thereof |
| CN102360585A (en) * | 2011-06-28 | 2012-02-22 | 陕西天盛新材料科技有限公司 | Aluminum paste for improving conversion efficiency of solar cells and preparation method for aluminum paste |
| CN102314958A (en) * | 2011-08-31 | 2012-01-11 | 乐凯胶片股份有限公司 | Conductive aluminum paste used for crystalline-silicon solar-battery back electrode and preparation method thereof |
| CN103474127A (en) * | 2013-08-23 | 2013-12-25 | 湖南红太阳光电科技有限公司 | Crystalline silicon battery back aluminum paste with upconversion characteristic |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018040569A1 (en) * | 2016-08-30 | 2018-03-08 | 南通天盛新能源股份有限公司 | Aluminum paste with high filling rate for local contact back surface field of perc cell and preparation method and use thereof |
| US10373726B2 (en) | 2016-08-30 | 2019-08-06 | Nantong T-Sun New Energy Co., Ltd. | Highly filled back surface field aluminum paste for point contacts in PERC cells and preparation method thereof |
| CN108447623A (en) * | 2018-03-23 | 2018-08-24 | 江苏国瓷泓源光电科技有限公司 | Modified boron nitride replaces simple substance boron doping solar battery aluminum slurry and preparation method thereof |
| WO2022116646A1 (en) * | 2020-12-01 | 2022-06-09 | 广州市儒兴科技开发有限公司 | Electrode slurry that makes contact with p+ emitter of n-type solar cell |
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Application publication date: 20160330 |